内阻测试及贴胶工装
The integrated design of internal resistance testing and adhesive application fixtures solves the problems of manual adhesive application deviation and insufficient welding quality inspection in lithium battery pilot production lines, achieving efficient and accurate internal resistance testing and adhesive application operations, thereby improving lithium battery production efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中汽新能(天津)电池科技有限公司
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium battery pilot production lines suffer from problems such as insufficient precision in manual adhesive application, inadequate coverage of welding quality inspection, and low efficiency and precision due to the separation of internal resistance testing and adhesive application processes. In particular, the positional deviation of manual adhesive application leads to low yield, and destructive tensile testing cannot fully inspect all components. Furthermore, existing equipment is complex in structure, high in cost, or has limited functionality.
An internal resistance testing and adhesive application fixture was designed. The integrated design enables efficient connection between internal resistance testing and adhesive application processes. By forming a unified coordinate system with the probe and the adhesive application reference block, positioning errors are eliminated. A spring-loaded floating probe ensures stable contact resistance. Combined with a modular movable edge and a bidirectional scale adjustment mechanism, it is compatible with various battery cell models, achieving precise adhesive application and full inspection of welding quality.
It significantly improves the production efficiency and product quality of lithium battery pilot production lines, ensuring that the adhesive application position accuracy is improved to ±0.1mm, the contact resistance fluctuation of internal resistance testing is ≤1%, and it realizes full inspection without destructive testing, reducing labor intensity and turnaround time, and meeting the needs of rapid adaptation of multiple battery cell models.
Smart Images
Figure CN224518930U_ABST
Abstract
Claims
1. An inner resistance testing and rubberizing tool, characterized in that, The fixture includes a base plate (1), a base plate reference edge (2), a first fixture side plate (3), a fixture crossbar (4), a base plate movable edge (5), a second fixture side plate (6), a fixture upright (7), a third fixture side plate (8), a fixture acrylic cover plate (9), a cover plate movable edge (10), a cover plate reference edge (11), a side plate crossbar (13), and an adhesive reference block and probe assembly (14). The base plate reference edge (2) is fixedly provided on the base plate (1), and the first fixture side plate (3) is fixedly connected to the fixture crossbar (4). The base plate movable edge (5) is provided on the base plate (1), and the base plate reference edge (2) and the base plate movable edge (5) are perpendicularly distributed to form a right-angle structure to fix the battery cell. The tooling base plate (1) is also fixed with a tooling upright (7), the second tooling side plate (6) is connected to the bottom end of the tooling upright (7), the top end of the tooling upright (7) is fixedly connected to the third tooling side plate (8), and the third tooling side plate (8) is fixedly connected to the tooling acrylic cover plate (9); the tooling acrylic cover plate (9) is slidably provided with a cover plate movable edge (10) and a cover plate reference edge (11) is fixed thereon, and the cover plate reference edge (11) and the cover plate movable edge (10) are perpendicularly distributed; the tooling cross bar (4) is connected to the side plate cross bar (13), and the side plate cross bar (13) is equipped with an adhesive reference block and a probe assembly (14), and a probe (15) is provided on the adhesive reference block and the probe assembly (14).
2. The inner resistance test and taping tool of claim 1, wherein, The adhesive reference block and probe assembly (14) includes an adhesive reference block slider (101), a positioning screw (102), a probe seat (103), a probe (104), a probe seat adapter block (105), and a positioning nut (106). The adhesive reference block slider (101) and the probe seat adapter block (105) are fixedly connected by bolts passing through the bolt through hole (201). The probe seat adapter block (105) is fixedly connected to the probe seat (103). The probe (104) is inserted into the probe hole (203) of the probe seat (103). The positioning screw (102) passes through the adhesive reference block slider (101) and is threadedly connected to the positioning nut (106) to lock the position of the adhesive reference block slider (101).
3. The inner resistance test and rubberizing tool of claim 2, wherein, A spring is provided between the probe (104) and the probe seat (103), and the spring is sleeved on the outside of the probe (104) so that the probe (104) is in a floating state; a through hole (202) is provided on the probe seat (103), and a positioning bolt passes through the through hole (202) to fix the probe seat (103) and the probe seat adapter block (105).
4. The inner resistance test and taping tool of claim 1, wherein, The acrylic cover plate (9) of the tooling is fitted with explosion-proof glass (12), which is located directly below the adhesive reference block and probe assembly (14) and is distributed vertically in correspondence with the adhesive reference block slider (101).
5. The inner resistance test and taping tool of claim 1, wherein, The base plate reference edge (2) and the cover plate reference edge (11) are mirror-symmetrically distributed in the horizontal direction, and their extension directions are consistent; the base plate movable edge (5) and the cover plate movable edge (10) are mirror-symmetrically distributed in the horizontal direction, and their extension directions are consistent.
6. The inner resistance test and taping tool of claim 2, wherein, The probe mount adapter block (105) has scale lines engraved on its surface in the X and Y directions. The X-axis scale line extends along the line connecting the adhesive reference block slider (101) and the probe mount (103), and the Y-axis scale line is perpendicular to the X-axis scale line. The probe mount (103) has scale lines engraved on its surface along the direction of the probe (104) arrangement.
7. The inner resistance test and taping tool of claim 1, wherein, The movable edge (5) of the base plate is slidably connected to the tooling base plate (1) via a slide rail. A locking bolt is provided on the movable edge (5) of the base plate, and the end of the locking bolt abuts against the tooling base plate (1) to fix the position of the movable edge (5) of the base plate.
8. The inner resistance test and taping tool of claim 1, wherein, The movable edge (10) of the cover plate is slidably connected to the acrylic cover plate (9) of the tooling via a slide rail. A locking knob is provided on the movable edge (10) of the cover plate. The end of the locking knob abuts against the acrylic cover plate (9) of the tooling to fix the position of the movable edge (10) of the cover plate.
9. The inner resistance test and taping tool of claim 1, wherein, The first tooling side plate (3), the second tooling side plate (6) and the third tooling side plate (8) are all set perpendicular to the tooling base plate (1), and the first tooling side plate (3) and the second tooling side plate (6) are distributed in parallel, and the third tooling side plate (8) is distributed perpendicular to the first tooling side plate (3).
10. The inner resistance test and taping tool of claim 1, wherein, The tooling base plate (1) is embedded with a semiconductor cooling chip, which is located below the battery cell area of the tooling base plate (1) and is electrically connected to an external temperature control device.